Line of Best Fit and Linear Regression
30 tutor-authored questions for this Ontario curriculum expectation, ordered easiest to hardest, every one with a full worked solution. Work through all 30 with your weekly-lesson access code.
Sample: the first question, solved
What is the "line of best fit" (regression line)?
📘 Worked solution
✓A line best representing the overall trend in a scatter plot, minimizing overall distance to all data points.
And one from the hard end
"A fitness study models RestingHeartRate=95−1.2(WeeksTraining), valid for 0–20 weeks of training. Predict resting heart rate at 15 weeks, then explain why using this equation to predict heart rate at 100 weeks of training would be unreliable."
Solution shown after you try it in practice mode.
Work through all 30, easiest to hardest
Your Winny Score tracks you as the questions ramp up. Stuck on one? A real Winny Math tutor will walk you through it. First lesson free.
Start practicing